This study quantified the magnitude and timing of summer streamflow deficits in paired-watershed experiments in the Cascade Range of Oregon where mature and old-growth conifer forests were subjected to clearcutting, patch cutting, and overstory thinning treatments in the 1960s and 1970s. Hydrologic effects of clearcutting, small-patch cutting, and overstory thinning...
Disposal of solid wastes in sanitary landfills presents potential problems of ground water contamination. The most conman contaminants are leachate and dissolved gas. Oregon has implemented a ground water quality monitoring program at selected landfills. Objectives are to protect the state1 s ground water resource and complement regulatory and enforcement...